USER GUIDE Stage Series Made in Taiwan SDI-1 Index Overview Features Audio Connection Various Instruments/Device Connection Unika Electronic Co., Ltd. Input PAD Attenuation 6F, No.168, Xin-Hu 2nd Rd. Nei-Hu District, Taipei City. 11494. Taiwan, R.O.C. Eliminating Hum and Buzz and the Ground Loop Specifications Measurement www.unikapro.com +886 2 27933017 +886 2 27928264 info@unikapro.
UNiKA SDI-1 User Guide OVERVIEW The UNiKA SDI-1 is an easy-to-use, single-channel, passive direct box for musical instrument and audio system applications. In addition to a highquality audio transformer, the SDI-1 has some very useful built-in features. So please take a few minutes to go through this user guide to ensure you take full advantage of the facilities on offer and get the best possible result. info@unikapro.
UNiKA SDI-1 ① ② ④ ⑤ User Guide ③ ① ¼“ TS LINK socket: a parallel-wired direct feed from the input. It can be linked to instrument amplifier. ② High-impedance direct input with Combo jack: connect to output of electronic musical instrument or audio device using XLR or TRS, TS jack plugs. ③ Input PAD: 0dB, -20dB & -40dB selectable 3-step attenuator reduces the input sensitivity to prevent overload.
UNiKA SDI-1 User Guide AUDIO CONNECTION Instrument Direct input & Parallel Link connection As with all audio gear, always ensure audio system levels are turned down or equipment turned off before making connections. This will avoid plugin or turn-on transients from damaging more sensitive components such as tweeters. There is one channel on the SDI-1, featuring an XLR- ¼“TRS Combo jack INPUT, a ¼“ TS parallel LINK output and a balanced XLR OUTPUT.
UNiKA SDI-1 Tip-Signal (+) User Guide Tip-Signal Hot (+) Ring-Signal Cold(-) Sleeve-Ground Sleeve-Ground Fig-3: ¼"TS Unbalanced connection Fig-4: ¼"TRS Balanced connection VARIOUS INSTRUMENTS/DEVICE CONNECTION Fig-5: Instruments, Guitar to instrument amps & console Fig-6: Stereo keyboard to instrument amps & console Fig-7: Audio device / player / computer to active speaker/PA system 4
UNiKA SDI-1 User Guide INPUT PAD ATTENUATION The most common use of the direct input is with guitar pick-ups, keyboards or audio devices like CD players, computers etc. The optimal setting for this is most likely with the pad switch set to 0dB, although with some high-output pick-ups the performance of the direct input may be improved if the pad switch is set to -20dB to prevent possible clipping of the input signal.
UNiKA SDI-1 SPECIFICATIONS User Guide (Specifications are subject to change without notice.) Circuit design Passive, transformer isolated Input connectors Unbalanced combo jack ( Pin-2 hot, Pin3&1 ground ) Link connectors Unbalanced phone jack Input pad switch 0dB / -20dB / -40dB Input impedance 1MΩ / 47KΩ / 47KΩ Max.
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